What does this error mean? I have a bunch of them in a bundled version of my meteor app.
Exception from Deps afterFlush function: TypeError: Cannot read property '_spark_y3zPMfQWJhDD6vSoY' of null
This error usually comes up when you move some Meteor rendered DOM elements using non-Meteor code (i.e. jQuery). Then, when Meteor goes to look for those DOM elements after a reactivity change, it can't find them and complains.